Lenovo 5B11K38530 is a rechargeable laptop battery for replacing an installed battery or keeping as a spare. Its lithium-polymer chemistry is identified in the listing.
The battery is rated at 15.44 V, with an energy capacity of 60 Wh and a charge capacity of 3886 mAh. Its listed colour is black.
Lenovo Legion Slim 5 16APH8 is named as a compatible system. The battery can restore portable power in a compatible laptop or be kept ready as a spare.